Single Script is a new web form option which enables automatic updates on your form when displayed on a web page.
Read the following article to learn more about this new feature.
This checkbox needs to be ticked in order to enable Single Script for your form.
Now select 'Save and Get Embedded Code'.
Here you will see a new tab called 'Single Script'.
Select this to get the HTML you need for embedding the form on your website.
Please Note: You only need to add the script reference to your website once, you do not need to add it everytime you add a new form.